hdl: Add non-null meta field for timetags (mainly for test).

d3c248bc · Matthieu Cattin · 5c6c0ed7 · d3c248bc
Commit d3c248bc authored Jan 07, 2014 by Matthieu Cattin
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Showing with 12 additions and 4 deletions

timetag_core.vhd hdl/ip_cores/timetag_core/rtl/timetag_core.vhd +12 -4

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--- a/hdl/ip_cores/timetag_core/rtl/timetag_core.vhd
+++ b/hdl/ip_cores/timetag_core/rtl/timetag_core.vhd
@@ -116,6 +116,14 @@ architecture rtl of timetag_core is
      );
  end component timetag_core_regs;
+  ------------------------------------------------------------------------------
+  -- Constants declaration
+  ------------------------------------------------------------------------------
+  constant c_TRIG_TAG_META      : std_logic_vector(31 downto 0) := x"6fc8ad2d";
+  constant c_ACQ_START_TAG_META : std_logic_vector(31 downto 0) := x"0d7c7c76";
+  constant c_ACQ_STOP_TAG_META  : std_logic_vector(31 downto 0) := x"2b4e09ff";
+  constant c_ACQ_END_TAG_META   : std_logic_vector(31 downto 0) := x"7f644cd2";
  ------------------------------------------------------------------------------
  -- Signals declaration
  ------------------------------------------------------------------------------
@@ -237,7 +245,7 @@ begin
    end if;
  end process p_trig_tag;
-  trig_tag.meta <= X"00000000";
+  trig_tag.meta <= c_TRIG_TAG_META;
  trig_tag_o    <= trig_tag;
  ------------------------------------------------------------------------------
@@ -257,7 +265,7 @@ begin
    end if;
  end process p_acq_start_tag;
-  acq_start_tag.meta <= X"00000000";
+  acq_start_tag.meta <= c_ACQ_START_TAG_META;
  ------------------------------------------------------------------------------
  -- Last acquisition stop event time-tag
@@ -276,7 +284,7 @@ begin
    end if;
  end process p_acq_stop_tag;
-  acq_stop_tag.meta <= X"00000000";
+  acq_stop_tag.meta <= c_ACQ_STOP_TAG_META;
  ------------------------------------------------------------------------------
  -- Last acquisition end event time-tag
@@ -295,7 +303,7 @@ begin
    end if;
  end process p_acq_end_tag;
-  acq_end_tag.meta <= X"00000000";
+  acq_end_tag.meta <= c_ACQ_END_TAG_META;
 end rtl;